Browsing by Subject "TMD"
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Item Associations between cephalometric values and radiographic osseous temporomandibular joint diagnoses in an adolescent orthodontic population(2015-06) Knudsen, KyleAIMS: To identify skeletal features and relationships associated with the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) osseous temporomandibular joint (TMJ) diagnoses in an adolescent population undergoing comprehensive orthodontic treatment, and to evaluate the reliability and validity of the cervical vertebral maturation (CVM) method for predicting mandibular growth. METHODS: Fifty-nine orthodontic patients were included in the study. Pre-treatment and post-treatment diagnoses of each TMJ were previously made by Anderson1 using the RDC/TMD. For each subject, a lateral cephalometric radiograph was extracted from existing pre-treatment and post-treatment cone beam computed tomography (CBCT) images. Each radiograph was assessed with cephalometric analysis and staged using the CVM method. Statistical analyses were performed with one-way ANOVA and Pearson and Spearman correlation coefficients. RESULTS AND CONCLUSIONS: The pre-treatment mandibular plane angle (FMA) and Wits appraisal had a fair degree of positive correlation with the pre-treatment TMJ diagnosis. However, no associations were found when the change in TMJ diagnosis over the course of orthodontic treatment was compared to cephalometric variables or measures of growth, nor did the pre-treatment cephalometric measurements predict changes in the TMJ diagnosis. The pre-treatment CVM stage was inversely correlated to mandibular growth observed during treatment, with no growth seen in subjects with a pre-treatment CVM stage of 6.Item Correlation Between Patient Reported Jaw Activities with Self-Reported Pain Ratings and Dentists’ Clinical Findings(2022-06) Al-Taee, AnasThis study aims to investigate the relationship between the Jaw Functional Limitation Scale (JFLS8) with the orofacial pain instruments of TMD screener, persistent tooth pain (PP) questions as well as dentists’ clinical findings. It is based on pre-existing dataset from the National Dental Practice-Based Research Network. A statistical analysis is performed for 1,306 participants who received root canal treatment. TMD and PP questionnaires are found to be moderately correlated (ρ=0.47) with JFLS8 using Spearman’s correlation analysis. On the other hand, the dentists’ clinical examination for tenderness to palpation, percussion, and biting did not correspond with JFLS8 (ρ=0.07, ρ=0.19, and ρ=0.23 respectively). Additionally, the JFLS8 is neither sensitive nor specific enough to clinically determine the presence of TMD or PP (AUC=0.72 and AUC=0.64 respectively). The JFLS8 correlates with TMD screener and PP questionnaire. Clinical endodontic examination, on the other hand, does not correlate with jaw functional limitations.Item Data supporting Holey Substrate-Directed Strain Pattering in Bilayer MoS2(2021-11-10) Zhang, Yichao; Choi, Moon-Ki; Haugstad, Greg; Tadmor, Ellad B; Flannigan, David J; flan0076@umn.edu; Flannigan, David JThis data set contains transmission electron microscopy (TEM), atomic force microscopy (AFM), and atomistic simulation data supporting "Holey Substrate-Directed Strain Pattering in Bilayer MoS2" manuscript cited in referenced by.Item Migraine As Predictor For Pain Intensity For Tmd Patients Undergoing Treatment(2015-08) Nascimento, ThiagoIntroduction: Temporomandibular disorders (TMD) occur in about 10% of the adult general population, which makes it a considerable public health problem. Some factors affect treatment outcome of TMD patients seeking care, and among the factors influencing the prognosis of TMD pain, are comorbid pain conditions. Headaches, particularly migraine, have long been reported to be more frequently associated in TMD patients. However, evidence is lacking whether migraine is a prognostic factor for TMD pain at follow-up for patients undergoing TMD treatment. Objective: To determine in TMD pain patients who undergo common non-surgical treatments whether the presence of migraine at time of diagnosis is associated with worse TMD pain intensity at follow-up over a time period of 18 months. Materials and Methods: In this prospective cohort study, a consecutive sample of 99 patients with a diagnosis of TMD pain consisting of MFP, arthralgia, and/or TMJ osteoarthritis according to RDC/TMD seeking care at the TMD and Orofacial Pain Clinic, University of Minnesota - School of Dentistry and undergoing common non- surgical treatments for TMD were recruited. Participants received a diagnosis of migraine according to International Classification of Headache Disorders 2nd edition (ICHD-II, 2004), the study exposure, at baseline. Characteristic pain intensity, the study outcome, was measured at 1, 6, 12 and 18 month follow-up and CPI differences at follow-up between patients with and without migraine were analyzed with several generalized equation estimation models and model selection was performed with QIC (Quasilikelihood under the Independence model Criterion). Baseline CPI status and sociodemographic variables were added to improve the model. Results: At time of diagnosis (baseline), patients with migraine had a CPI level of 53.9 (95% CI: 43.2-64.6) and patients without migraine had a CPI level of 55.8 (95% CI: 51- 60.5). At follow-up, CPI had decreased in both groups but patients with migraine had more pain. The statistically best fitting model predicted CPI values of 45.8, 38.4, 34.8 and 29.2 at 1, 6, 12, and 18 months, respectively for patients without migraine. Patients with migraine showed model-predicted differences, additional CPI compared to patients without migraine, of 10.6 (95% CI: -1.6 -22.9), 8.7 (95% CI: -8.0-25.4), 5.4 (95% CI: - 7.3-18.2) and 16.5 (95% CI: 5.2-27.8) at 1, 6, 12, and 18 months, respectively. According to guidelines to interpret effect sizes, the effect was "small."� A simple, more interpretable and still statistically well fitting model predicted that CPI decreases 0.96 per month during follow-up and patients with migraine have 11.6 (95% CI: 2.7-20.4) more CPI over the time period of 1.5 years than patients without migraine. Conclusion: For TMD patients who undergo common non-surgical treatments, migraine is a potential prognostic factor for TMD pain intensity at follow-up. Patients with migraine at the time of diagnosis have statistically significant more TMD pain intensity over a time period of 1.5 years than patients without. While the migraine effect is small, it suggests that treatment for migraine could possibly be incorporated in the overall treatment plan to improve patient outcomes.Item Predictors of Persistent TMD Pain: A 9-year Cohort Study(2015-10) Penteado Kapos, FlaviaAims: To determine, in subjects with painful temporomandibular disorders (TMD), whether baseline SF-12 Physical Component Summary (PCS), SF-12 Mental Component Summary (MCS) and Jaw Functional Limitation Scale (JFLS) predict persistent TMD pain measured by Characteristic Pain Intensity (CPI) scores after 9 years. Methods: 258 subjects with painful TMD diagnoses and CPI>0 completed baseline SF-12 Health-Related Quality of Life (HRQoL) and JFLS questionnaires. After 9 years, they were reevaluated for painful TMD diagnoses and completed the CPI questionnaire. Univariable and multivariable linear regression adjusted for age and sex examined the relationship between baseline predictors and follow-up CPI. Results: After 9 years, 186 (72%) had persistent TMD pain. Baseline PCS and JFLS, but not MCS, presented weak linear relationships with follow-up CPI. One SD (9.0) increase in baseline PCS was associated with a 4.9-point decrease in follow-up CPI (SE=1.2, p<0.001), or 5.7% of the follow-up CPI score range. One SD (1.4) increase in baseline JFLS was associated with a 5.0-point increase in follow-up CPI scores (SE=1.2, p<0.001), or 5.8% of the follow-up CPI score range. In the 3-predictor multivariable model, follow-up CPI change predicted by 1 SD increase in baseline scores was of -4.7 (SE=1.3, p<0.001) for PCS, and 3.9 points (SE=1.2, p=0.002) for JFLS. Conclusions: In subjects with TMD pain, baseline PCS and JFLS, but not MCS, were statistically significant predictors of CPI at a 9-year follow-up. However, the magnitude of the effects is small and below the 10-20% minimum change in pain intensity recommended for clinical significance.